侧氨基聚硅氧烷的合成及其在聚氨酯胶粘剂中的应用  

Synthesis of Polydimethylsiloxane Oligomers with Pendant Amine Groups and Its Application in Polyurethane Adhesive

作　　者：刘飞[1] 吴晓青[1] 艾罡[1] 王志强[1] 李伟[1] 

机构地区：[1]中北大学理学院,太原030051

出　　处：《聚氨酯工业》2011年第4期43-46,共4页Polyurethane Industry

摘　　要：以八甲基环四硅氧烷(D4)和N-β-氨乙基-γ-氨丙基甲基二甲氧基硅烷(HC-550)为原料,六甲基二硅氧烷(MM)为封端剂,乙醇钾为催化剂,通过共平衡聚合反应,合成了侧氨基聚硅氧烷(NH2-PDMS),研究了合成条件对NH2-PDMS胺值的影响。结果表明,当D4、HC-550和MM的摩尔比为45∶3∶2、乙醇钾和二甲基亚砜的质量分数分别为0.14%和1.0%、反应温度为120℃、反应时间6 h时,合成的NH2-PDMS胺值约为1.0 mmol/g。将NH2-PDMS用于改性聚氨酯胶粘剂时,其综合性能较好。By co-equilibration polymerization,polydimethylsiloxane oligomers with pendant amine groups（NH2-PDMS）was synthesized from octamethylcyclote trasiloxane（D4） and N-β-aminoethyl-γ-aminopropylmethyl-dimethy-oxysilane（HC-500）,using hexamethyldisiloxane（MM） as end capping agent,CH3CH2OK as catalyst and dimethylsulfoxide（DMSO） as promoter.The influence of process condition to NH2-PDMS ammonia value was studied.The results showed that when the molar ratio of D4,HC-550 and MM was 45∶3∶2,the CH3CH2OK and DMSO dosage were 0.14% and 1.0%,the reaction temperature was 120 ℃ and the reaction time was 6 h,the ammonia value of synthetical NH2-PDMS was 1.0 mmol/g.The polyurethane adhesive modified by the NH2-PDMS had good comprehensive properties,lower water absorption rate,higher water resistence and salt tolerance.

关 键 词：N-Β-氨乙基-Γ-氨丙基甲基二甲氧基硅烷 侧氨基聚硅氧烷 改性 聚氨酯胶粘剂 

分 类 号：TQ433.432[化学工程]